Emergence of Glyphosate- and Glufosinate-resistant Italian Ryegrass (Lolium multiflorum) Populations in Japanese Pear Orchards in Japan and their Responses to Several Foliar-applied Herbicides

Japan Agricultural Research Quarterly
ISSN 00213551
NII recode ID (NCID) AA0068709X
Full text

Preharvest sprouting (PHS), caused by rain after maturity, leads to a severe degradation of buckwheat quality. We previously reported the PHS tolerance of several natural resources and landraces in Japan, and have bred PHS-tolerant lines. Here, we investigate the rates of PHS in our breeding lines and leading cultivars in Japan. The new lines ‘Kyukei 28’ and ‘Kyukei 29’ had better PHS tolerance than all leading cultivars. To reveal the PHS tolerance inherited by these lines, we performed genetic analysis using crosses between these lines and a self-compatible line, ‘Kyukei SC7’. The rate of germination in F2 segregating lines showed different segregation patterns, suggesting that major tolerance genes in ‘Kyukei 28’ (KY28) are recessive and those in ‘Kyukei 29’ (KY29) are dominant. This information could help to accelerate the breeding of buckwheat lines with PHS tolerance and develop DNA markers for the selection of tolerant lines.

Date of issued
Creator Takahiro HARA Ryoma TAKESHIMA Katsuhiro MATSUI
Subject breeding ecotype genetic analysis seed dormancy
Publisher Japan International Research Center for Agricultural Sciences
Received Date 2019-03-25
Accepted Date 2019-08-01
Available Online
Volume 54
Issue 2
spage 137
epage 143
DOI 10.6090/jarq.54.137
Language eng

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